Tenon-fastener.



H. P. NEPTUNE.

TENON FASTENER.

APPLICATION FILED MAR.17,1913.

1,083,697 PaIsentedJanQlQM.

L V'ff'U Parana orme-i3. I

", iannnnnmnnrrunn, or Boorman; oononano i Tanon-measure.

` Beit known that I, HERMAN l?. Neurona,

'a'citizen of the .United States, residingat V f #Bouldenfinthe county of Boulderand State "cl ear,"and exactdescri useful Improvements in Texten-Fasteners; andI'fdo declare the following to be :i f ull, tion of the invention,

I such as will enable o ers 'skilled in the art toxivhich .it appert-ams to make and use the same.: v

' i Thisinvention lrelates wooden joints,

` and .more particularly to those lknown as "mortis-e) and tenen; 'and the object of the .same 4is .to produce an, improved f fastening or socket.

device' 'for holding. the tenon inthe mort-isc -..To this' endfthe invention consists in.V

" the wall of the mortise when it is attempted to withdraw the tenon-all'as Ahereinafter more fully described and.cla.im'ed, and as shovvn inthe drawings wherein- Figure '1.is Aa. longitudinal sectional view through-a mortise and tenon, showing the usent this improved fastener; and Fig. 2

. .tov

- 1. .Figfis a. side elevation of the fastener yis across section on the line 2-2 of Fig.

alone. Fig. 4 is a sectional view of a round tenen inserted ina socket, showing a slightly different form of the groove around the former; and' Fig. ,5 is a plan View of the vFig. 6 is-a similar 'section ofaslightly modified `form of groove and the fastener therefor;

Figfg isa similar. section of yet another modification.; and Fig. 8is an enlarged end elevation of the fastener s hown in Fig. 6. In thcvarious, sectional views of. the drawings are shown two members whereof one has a -socket 'or'. mortised end and the other has a pin orA tenon T, and the shoulder around the base of the same may be abrupt as shown at S o r .of other shape as indicated at S'. .Ibma'tters notwhether the interengaging members arc .rectangular` in cross section as seen in Fig.2, or round as shown in Flgs. 4, Gand 7, the size and materials of parts are not essential, and the manner of "j forming and assembling them need not be elaborated. The gist of the present invention lies in the provisionof means for preventing the accidental Withdrawal of the i g J a tenon from the mortise-somethin'g to replace the glue commonly employed, or even the dowel pin which vis sometimes driven transversely throughthe tcnon asis too Well known Vand understood to needelaboration.` The present invention consists in formingv Q Specification ofAIletters "Patent. Pateilted-Jan.6,1914. i :.applicatioaaleduareh'm191s. Atuariai No. 754,914. l 3

a groove around the tenon and placing therein a'fa'stener which is made of a strip 1 of metal whose body is cut from one edge ineralolyA having their outer extremities roughened or toothed "as shown at 3. 1 This fastener may 'be sold in long-str1ps capable-of being broken or cut off 'at any, .suitable point to fit the requirements of any.

. 65 ward to produce a series of ,tongues 2, p recase.l 'If the mortise and tenon be round, the fastener is bent into the shape of a. split ring as shown in Figs.

tangularfthe' fast-ener may be bent into the shape illustrated in Fig. 2. However,. it. would suffice if a stretch ofthis fastener .were attached in any suitable Way to the tenen T and carried. by it. into the mortise M and as perhaps the simplest way of'attaching it to said tenonI form a groove 4 around the latter near its tip -5 and place the strip l in this groove. As shown in Fig.

5 and 8, as it is not. necessary that -the ends be connected. 1f. the mortise and'tenon be squareor ree;

Q, the groove passes `around but three sides of the rectangular tenon there illustrated: if said tenon be round thc groove -Would doubtless extend all the way around it and the metallcstrip l bc bent into the shape of a truncated cone' and sprung into place as illustrated in Fig. S. Thegroove shown in l"ig..`1 lias two square shoulders or Walls perpendicular to the axis of the tenon, the

groove G shown in Fig. 4 has one square shoulder or wall and a Asecond Wall beveled from the inner edge of the first to the ob.-

tuse angle 7 Whereit runs out to nothings.

on the face of the tenori, the groove in Fig.

7 is .similarly constructed but the fastener.

is formed in a slightly different. manner, and

the groove S in Fig. 6 also has one square y and onebeveled wall meeting in an acute' angle. but in the bottom of said an le is formed a kerf 9 saWed in to'the mem er T all the way around and in a plane directly perpendicular to its axis. 1

The fastener-will be shaped to it the groove. I in Fig. l, the strip' lwillbe a straight, fiat baud of metal passing around all four sides ofthe tenon, or not less than' three sides in With the latter formed as shown" any event (see Fig. 2)'so .that the fastener shall be held on the tenon for a purpose to be explained below. With a roove 6 having one beveled wall as shown 1n Figs. 4 and 7 the body ofthe strip 11 will lie upon the beveled wall and the tongues 12 will project from this body as shown.` With the groove 8 and kerf 9 as shown in Fig. 6, the body 13 'of the strip will have an inturned flange 14 which springs closely into the kerf and prevents the accidental dislodgment of the fastener.' This flange may be turned outward' as shown at 15 in Fig. 7, or it may be omitted as vseen in Fig.'4. In all cases I vwould incline the tongues away from thetip 5 of the 'I tenon, and give them such length that their aggregate contour is slightly greater than the size of the mortise M.

In assembling-.the two members which areto be fastenedsby this-mortise and tenon.-l

tise wall will press this ring into thegroove. The liange 15. employed in Fig. 7 ina es the fastener-strip' more rigid and' affords a larger base to resist the thrust on the tongues 2 when it is attempted 'to withdraw the tenon. The flange 14 shown in Fig. 6 enters the kerf 9 at the bottom of the groove; and besides making the strip more rigid holdsit quite firmly in place so that it willfbe, em-V tremelydiiicult to other mdiications facturer and may parting from.. the spirit of my invention.

IVhat is claimed as new is:

l. The combination with a tenen having around it a groove whereof that wall'next the tip is perpendicular to the axis o f the teno'n' and the other Wall is inclined; of a fastener composed of a strip of sheet metal bent into, the term of a truncatedzcone adaptj oint,.I would select the proper fastener and' lay itlin the groove around the tenen, what-A ever the shape ofthat groove may be. If the tenon be rectangular, the fastener might be bentf`around three sides of it as seen in Fig. 2,'but if the'tenon be round the fastener would be a split ring or truncated cone .as shown in Figs. 5 'and 8, and its split ends could beseparated so that the ring could be sprung around the tenon and dropped into this groove whatever the shape of t e latter may be. Care should Vbe taken that the tongues project away from the tip or extremity of the tenon. The latter is then inserted inthe mortise M and driven home'- with or without glue or other liquid'fAs the' tenon passes into the mortise the walls of the latter spring the tongues inward and their tips 3 slide along such walls until the tip 5 of the tenon comes torrest at the' base of the mortise. The natural springI of the metal then throws the toothed extremities 4or tips 3 -of the tongues outward and they automatically indent the walls 'te' a slight extent. If -now it is attempted jto withdraw the tenon from the mortise, these toothed tips or extremities enter said mortise wall, like barbs, with'the result that avery. firm joint is produced and at extremely little expense. I could not say which form of the device I prefer. The groove 4, having two perpendicular walls is usually easier to make and will suffice where the tenen is s uare or rectangular, because the abutting' .di one edge of the strip 1 against one of said walls will prevent the fastener. from being dislodged as the tenen is driven into place. With the groove 6 having one erpendicular and one inclined wall, andthe astener made A i'n the shape of a split ring as shown in Fig.

. ed to lie on the inclined wall of said groove,

'and spring tongues cut from its body and inclining outward from the same at a greater angle to said axis than the inclined wall of' its groove.

around it a grodve'whereofvthat Wall next the tip is perpendiculartothe axis .of the tenon and the other wall isinclined; of a dislodge it. These and will occur --to the,l manube adopted 'without dey 2. The combinationfwith' a tenon having fastener composed Nof a strip of sheet metal bent into the formof a truncated cone adapt- A ed to lie on the 'inclined wall of said groove,-

-inclining outward v` lfrom the same at' a the inclined wall of its grjo'ove, the extremities of said tongues being toothed and the sm'aller. end of the body having a'aange andspringtongues cut lfrom its body and greater angle to the axis of the tenon than standing in aplane at right 4angles to sald axis and lyinggainst wall.

around it a grobve 'whose wall next the tip said perpendicular f i' 3. The combination with atenon havingl ,l

-the tenon and' whose opposite wall is in A clined, and a kerjormed the .angle between said walls of a fastener Vconsisting of a stripemetal body bent into the form'of a truncated cone lying on said inclined wall and having an inturned flange at its smaller -end lying in said kerf, .ind spring tongues cut from the other edge of said4 ody and benth outward therefrom, for the purpose set fort 'r my hand in presence of two subscribing wit-v nesses.

5, its endsmust not abut, and the, extremities .of the tongues 2byslding on the'nior- I" .J. E. Coons.-` FRED WHITE.

In testimony whereof I have hereunto set' 

